Calendar of Events

Listed below is a calendar of events showing significant dates for Earnings Conference Calls, Dividends Payment Dates, and Record Dates.

Date 2010 Events
02/24/10 Ex-Dividend Date *
02/25/10 Earnings Release - Fourth Quarter 2009 (after market closes)
02/26/10 Earnings Conference Call – Fourth Quarter 2008 (8:00 a.m. CST)
02/26/10 Record Date *
03/20/10 Dividend Payment Date *
05/05/10 Earnings Release – First Quarter 2010 (after market closes)
05/06/10 Earnings Conference Call – First Quarter 2010 (8:00 a.m. CDT)
05/13/10 Annual Meeting of Shareholders – Chicago
05/26/10 Ex-Dividend Date *
05/28/10 Record Date *
06/19/10 Dividend Payment Date *
08/04/10 Earnings Release – Second Quarter 2010 (after market closes)
08/05/10 Earnings Conference Call – Second Quarter 2010 (8:00 a.m. CDT)
08/27/10 Ex-Dividend Date *
08/31/10 Record Date *
09/20/10 Dividend Payment Date *
11/03/10 Earnings Release - Third Quarter 2010 (after market closes)
11/04/10 Earnings Conference Call – Third Quarter 2010 (8:00 a.m. CDT)
11/24/10 Ex-Dividend Date *
11/30/10 Record Date *
12/20/10 Dividend Payment Date *

* Subject to dividend approval by the Board of Directors

For more information, contact Investor Relations at 800-228-6888.

Last updated: 01/19/10